22869281 has 2 divisors, whose sum is σ = 22869282. Its totient is φ = 22869280.

The previous prime is 22869269. The next prime is 22869283. The reversal of 22869281 is 18296822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21390625 + 1478656 = 4625^2 + 1216^2 .

It is a cyclic number.

It is not a de Polignac number, because 22869281 - 2¹⁴ = 22852897 is a prime.

It is a super-2 number, since 2×22869281² = 1046008026913922, which contains 22 as substring.

Together with 22869283, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22869283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11434640 + 11434641.

It is an arithmetic number, because the mean of its divisors is an integer number (11434641).

Almost surely, 2^22869281 is an apocalyptic number.

It is an amenable number.

22869281 is a deficient number, since it is larger than the sum of its proper divisors (1).

22869281 is an equidigital number, since it uses as much as digits as its factorization.

22869281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27648, while the sum is 38.

The square root of 22869281 is about 4782.1837062162. The cubic root of 22869281 is about 283.8469096557.

The spelling of 22869281 in words is "twenty-two million, eight hundred sixty-nine thousand, two hundred eighty-one".